1. Prepare pasta according to package directions 2. Mix water, lemon juice, tahini, nutritional yeast, red pepper flakes and salt. (Tahini thickness may vary by brand, you may need to add a little bit more water to get a smoother consistency.) 3. Saute tempeh in 1 Tablespoon of oil until browned (roughly 10 minutes). Transfer to a plate. 4. In the same pan saute broccoli and cauliflower in 1 Tablespoon of oil. When the broccoli & cauliflower are nearly done, add garlic and remaining oil. 5. Once the veggies are cooked, add green onions, pasta and tahini sauce. Toss to coat.